Re: [PATCH 2/3] drm/amd/display: Fix fast updates on DCE 8.1

[Mario Limonciello <mario.limonciello@amd.com>]

On 9/23/26 07:20, Timur Kristóf wrote:
> DCE8 should use legacy fast updates.
> This was already set for DCE 8.0 and 8.3, but it seems
> that DCE 8.1 (found in Kaveri chips) was forgotten.
> 
> This fix should be backported to all kernel versions that
> have "Refactor fast update to use new HWSS build sequence",
> but this patch won't apply cleanly to older kernels due to
> another refactor in "Remove dc param from check_update".
> 
> Fixes: 0baae6246307 ("drm/amd/display: Refactor fast update to use new HWSS build sequence")
> Fixes: 9ec11bb842b6 ("drm/amd/display: Remove dc param from check_update")
> Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
> ---
>   drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c
> index 26820d35478a..2f4de697ec4b 100644
> --- a/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c
> +++ b/drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c
> @@ -1148,6 +1148,8 @@ static bool dce81_construct(
>   	dc->caps.max_cursor_size = 128;
>   	dc->caps.min_horizontal_blanking_period = 80;
>   	dc->caps.is_apu = true;
> +	dc->debug = debug_defaults;
> +	dc->check_config = config_defaults;
>   
>   	/*************************************************
>   	 *  Create resources                             *

Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
I'll get this queued up, thanks.